loans in bitcoin form? Japan is a very amazing country, we can borrow bitcoin and trade it. after a profit we can pay the bitcoin we borrow, a very good financial breakthrough
Or, if you trade with loss, (if you use margin, for example...) and you have a margin call and your whole deposit is gone, you can pay back all the bitcoins you have borrowed from your fiat income (and if the exchange rate goes up, you will pay back much more than you borrowed...